Bench back



FIG. 1 is a front perspective view of a bench back, showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a back elevational view;

FIG. 4 is a left elevational view, the right side being a mirror image;

FIG. 5 is a top plan view;

FIG. 6 is a bottom plan view;

FIG. 7 is a front perspective view of an alternate embodiment incorporating spacers at the bottom of the bench back, showing my new design;

FIG. 8 is a front elevational view;

FIG. 9 is a back elevational view;

FIG. 10 is a left elevational view, the right side being a mirror image;

FIG. 11 is a top plan view; and,

FIG. 12 is a bottom plan view. 

The ornamental design for bench back, as shown and described. 